'Dark matter is more valuable than gold': Wobbly galaxies help shine a light on the universe's strangest stuff

Dark matter outweighs "ordinary matter" by a staggering ratio of five to one.

Scientists propose a novel way to map dark matter using the "wobble" of the Milky Way.

Dark matter makes up about 85% of the total matter in the universe.

There is less than 2.2 pounds of dark matter in a volume equivalent to that of the entire Earth .

Pulsars, like all neutron stars, are born when stars at least eight times as massive as the sun run out of their fuel supply needed for nuclear fusion.

This means neutron stars are composed of the densest matter in the known universe.

The rapid reduction in size of the massive stars' cores has another consequence: it speeds the neutron star up to 700 turns per second .